I'm looking at the downpipes available. I have decided I either want the ets or the UR o2 downpipe. I was just wondering since they have different designs, primary pipe lengths, different flex pipe placement, o2 sensor placement, etc. Are there any design advantages or disadvantages to either design. The UR one is cheaper, so I lean more towards that. I searched and couldn't find anything. Dyno comparison would be great if there is one available.

 

I don't think anyone really has a dyno of just a test pipe.

If it were me, personally, I'd go with ETS because I have their products already which have been proven to put down some serious power on my most recent dyno.

 

I have the UR and I love it! I had it ceramic coated as well. Perfect fit, zero problems and great power gains with an FP Red! Worth every penny.

 

Not the testpipes; downpipes. You guys see what I'm talking about with the designs right? Also, one has less welds than the other. Maybe someone knows the weights of the two. It seems like I'm breaking it down into so many different factors, but I like to find out beforehand if possible. I don't want to go through as many parts on this car as I did on my si.

 

I have the o2/dp from UR. It's a quality product. I don't think you can go wrong with either one, either for performance or quality. plus for UR, their customer service as well as warranty guarantee on their product is really unbeatable.

 

for what its worth, if you get the Ultimate Racing one, and you ever want to put your stock cat back on, you will have to modify the stock cat by knocking off the original nuts that are tack-welded in order to mate it. This is because of their decision to put the flex-joint at the very end of the pipe and so close to the flange....

 

I should have a direct comparison with no other changes but going from ultimate standard down pipe to the ultimate 02 down pipe posted in the next couple weeks. I'm not on the stock turbo though so I would expect I would see bigger gains than those on the stocker.

As for the design, Ultimate is releasing a revised design this week, they start shipping on thursday, so it may address the comment above about it fitting with the stock cat. Darryl mentioned the flex section was one of the things he changed.

 

https://www.evolutionm.net/forums/ev...st-system.html

 

Why is cheaper better? In this business, you usually get what you pay for. and I know there are exceptions, but it is the general rule. you do things half a$$, you get half a$$ results....

ETS all the way... not saying the UR one won't work, but that's just my preference...

 

I would say maybe 65% of the time.

 

don't forget about this!
http://www.amsperformance.com/cart/A...-Downpipe.html

 

Thank god because that was frankly the most awful place to put that flex section.... Not only did it limit access to bolts/nuts on the flange, but it also rendered the flexing useless..... My entire TURBOBACK was pushing backwards a good inch or so AT LEAST at the track and my entire exhaust would fall off on one side at the rear....

According to Ultimate Racing, i was the only one that reported that problem, so who knows...

3 design flaws are keeping the UR from being a top-notch design

1) O2/DP flex location to flange, etc
2) catback does not fit onto stock CAT without having to run thinner diameter aftermarket bolts through the stock cat nuts (or having to modify stock cat by hammering off the welded nuts... no no in my opinion)

3) Metal bung hangers on rear section aim the opposite way, so any movement of system backwards, and the exhaust can slip off its hangers...

 

yeah that

 

I may just go with that. Do you have a link to the preorder for it? What about a preorder for the ams exhaust? Any pics of the ams exhaust (dual) as well? I wonder what the weight will be in comparison to the buschur one.

 

I can't really speak for any of the other o2/downpipe systems on the market, but ours is a direct bolt on w/ no modifications to the stock cat. We also provide studs that you screw into the turbo for an easier installation. The hardest part about the o2/downpipe setup is taking off the OEM setup...

We also have 2 options

Recirculated and Dumped to Atmosophere

Both units run $440.00 and include the twin scroll style gasket in the price!

We also back our products with a lifetime warranty against any type of manufacture defect.